Temp Sensor
How to add a temp sensor to Domoticz
See here for how to do the hardware part of it.
Log into Domoticz
Go to Setup, Hardware then add a dummy device named Pool Temp
Select Create Virtual Sensors, then make a virtual sensor called pool temp with type Temperature
Go to Setup, Devices, and find Pool Temp. See what the index is
Go to the setup page for the Wemos ESP that has the temp sensor connected to it
Go to devices page, then edit for the the DS18b20 device you are using. Change IDX to match the IDX for Pool Temp from Devices page (72 per the figure above)
Hit submit on bottom of page
Now check Temperature page in Domoticz.
Pool Temperature should now be displayed.